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This question is about the effects of deforestation and agriculture - AQA - GCSE Biology - Question 6 - 2023 - Paper 2
Question 6
This question is about the effects of deforestation and agriculture. The processes of photosynthesis and respiration affect the carbon dioxide concentration in the ... show full transcript
Worked Solution & Example Answer:This question is about the effects of deforestation and agriculture - AQA - GCSE Biology - Question 6 - 2023 - Paper 2
Step 1
Explain what causes the changes in the carbon dioxide concentration in the air: from 0 to 6 hours.
Answer
During the initial 0 to 6 hours, there is limited or no light available for photosynthesis to occur, leading to only respiration happening. Respiration produces carbon dioxide, hence causing an increase in the carbon dioxide concentration in the air.
Step 2
Explain what causes the changes in the carbon dioxide concentration in the air: from 8 to 12 hours.
Answer
From 8 to 12 hours, there is increased light availability, which allows photosynthesis to take place. The rate of photosynthesis during this time exceeds the rate of respiration, resulting in a decrease in carbon dioxide concentration in the air.